Mobility control reagents with superior thermal stability

Details Mobility control reagents with superior thermal stability Mobility control reagents with superior thermal stability

E - Fixed Constructions

21

B

31/23

E21B 43/22 (2006.01) C09K 8/588 (2006.01)

Patent

CA 1279470

30,099 TITLE OF THE INVENTION MOBILITY CONTROL REAGENTS WITH SUPERIOR THERMAL STABILITY ABSTRACT OF THE DISCLOSURE Homopolymers of 2-acrylamido-2-methylpropane sul- fonic acid or its salts or copolymers thereof with N,N- dimethylacrylamide are used to maintain the viscosity of aqueous solutions thereof in the presence of poly- valent salt containing-waters during the enhanced re- covery of petroleum from subterranean petroleum-bearing deposits.

529840

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